2 Pack 3.6V Cordless Phone Rechargeable Battery For Panasonic HHR-P592 KX-TCC902 KX-A92 KXA92 AT&T 24893 A92 A-92 IBM BAT1400A IBM4900 Vtech 40-2420 40-2421 Ni-MH Replacement Rechargeable Battery Voltage: 3.6V (Compatible with 3.7V) Capacity: 1200mAh New generic Panasonic HHR-P592 Cordless Phone Compatible Ni-MH Battery Please search with model number of your original battery and laptop for the right battery . If you have question about compatibility, please feel free to contact us.